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Friday, May 1, 2009

Pancake or Paper Layer Fossil

This fossil reminds me of stacks of pancakes or layers of paper. I am not sure if it is a coral or a sponge. It was found in a Devonian fossil area in Louisville, Kentucky.











UPDATE: This fossil is a mounding stromatoporoid or calcareous sponge. It probably lived in the Silurian period.